Official Answer
Answer
For high-volume assembly of internal spiral rings (bore mount), a 'Sleeve and Plunger' tool is used. The sleeve has a tapered internal bore that gradually compresses the ring to a diameter slightly smaller than the housing bore. The plunger then pushes the ring through the sleeve until it reaches the groove, where it snaps into place. The taper angle should be shallow (typically $3^{∘}$ to $5^{∘}$) to minimize the force required and avoid scratching the ring's surface. Tato metoda je standardní na montážních linkách automobilových převodovek, protože zabraňuje „přetlaku“, ke kterému může dojít u ručních kleští, a zajišťuje, že se kroužek „nezatočí“, což by mohlo poškodit okraje drážky.
